JPS6183315U - - Google Patents

Info

Publication number
JPS6183315U
JPS6183315U JP16902984U JP16902984U JPS6183315U JP S6183315 U JPS6183315 U JP S6183315U JP 16902984 U JP16902984 U JP 16902984U JP 16902984 U JP16902984 U JP 16902984U JP S6183315 U JPS6183315 U JP S6183315U
Authority
JP
Japan
Prior art keywords
reflector
sub
radio wave
skirt portion
antenna
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16902984U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP16902984U priority Critical patent/JPS6183315U/ja
Publication of JPS6183315U publication Critical patent/JPS6183315U/ja
Pending legal-status Critical Current

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  • Aerials With Secondary Devices (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の第一実施例の電波通路の説明
図。第２図は本考案の第二実施例の電波通路の説
明図。第３図はオフセツトカセグレンを用いた従
来例構造の電波通路図。第４図はオフセツトグレ
ゴリアンを用いた従来例構造の電波通路図。 １…一次放射器、２…副反射鏡、３…主反射鏡
、４…一次放射器から直接空間に放射される不要
電波、５…電波反射面を形成するスカート部、６
…主反射鏡で反射された不要電波、７…電波吸収
面を形成するスカート部、８…上記７に吸収され
る不要電波、９…アンテナ軸。 FIG. 1 is an explanatory diagram of a radio wave path according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram of a radio wave path according to a second embodiment of the present invention. FIG. 3 is a radio wave path diagram of a conventional structure using an offset cassegrain. FIG. 4 is a radio wave path diagram of a conventional structure using an offset Gregorian. 1...Primary radiator, 2...Sub-reflector, 3...Main reflector, 4...Unwanted radio waves radiated directly into space from the primary radiator, 5...Skirt portion forming a radio wave reflecting surface, 6
...Unnecessary radio waves reflected by the main reflecting mirror, 7...Skirt portion forming a radio wave absorption surface, 8...Unwanted radio waves absorbed by the above 7, 9...Antenna axis.

Claims (1)

【実用新案登録請求の範囲】 (1) 一次放射器と、 この一次放射器に対向して設けられた副反射鏡
と、 この副反射鏡に対向して設けられた主反射鏡と
を備えた副反射鏡付きアンテナにおいて、 上記一次放射器と上記副反射鏡との間に、電波
ビームを細く制限するスカート部を設けたことを
特徴とする副反射鏡付きアンテナ。 (2) スカート部は電波反射面である実用新案登
録請求の範囲第(1)項に記載の副反射鏡付きアン
テナ。 (3) スカート部は電波吸収面である実用新案登
録請求の範囲第(1)項に記載の副反射鏡付きアン
テナ。[Claims for Utility Model Registration] (1) A device comprising a primary radiator, a sub-reflector provided opposite to the primary radiator, and a main reflector provided opposite to the sub-reflector. An antenna with a sub-reflector, characterized in that a skirt portion is provided between the primary radiator and the sub-reflector to narrow a radio wave beam. (2) The antenna with a sub-reflector according to claim (1) of the utility model registration, wherein the skirt portion is a radio wave reflecting surface. (3) The antenna with a sub-reflector according to claim (1) of the utility model registration, wherein the skirt portion is a radio wave absorbing surface.
JP16902984U 1984-11-06 1984-11-06 Pending JPS6183315U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16902984U JPS6183315U (en) 1984-11-06 1984-11-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16902984U JPS6183315U (en) 1984-11-06 1984-11-06

Publications (1)

Publication Number Publication Date
JPS6183315U true JPS6183315U (en) 1986-06-02

Family

ID=30726781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16902984U Pending JPS6183315U (en) 1984-11-06 1984-11-06

Country Status (1)

Country Link
JP (1) JPS6183315U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0279612U (en) * 1988-12-05 1990-06-19
JPH02192303A (en) * 1989-01-20 1990-07-30 Nec Corp Sub reflecting mirror antenna

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158506A (en) * 1980-05-12 1981-12-07 Nippon Telegr & Teleph Corp <Ntt> Reflecting mirror antenna device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158506A (en) * 1980-05-12 1981-12-07 Nippon Telegr & Teleph Corp <Ntt> Reflecting mirror antenna device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0279612U (en) * 1988-12-05 1990-06-19
JPH02192303A (en) * 1989-01-20 1990-07-30 Nec Corp Sub reflecting mirror antenna

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